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I have two cisco switches and a cisco router. The router connects to the first switch (A) and the second switch (B) is connected to switch A. Switch A only has one vlan port set (The one that connects to switch B). From a device connected to switch B I can access anything that is connected to switch A. But from switch A I can not access devices that are connected to switch B. Devices connected to Switch A and B can access things behind the router just fine. What do I need to add to the router or switches to allow devices connected on switch A to access devices connected to switch B ... some of the configuration follows to give more detail.....

Switch A
Most ports are set as
interface FastEthernet0/2
no ip address

The Port that connects to Switch B is set as
interface FastEthernet0/20
switchport access vlan 5
no ip address

Switch A also has VLAN's Set

interface Vlan1
ip address

interface Vlan5
ip address

Switch B All ports are configured like the following
interface FastEthernet0/2
switchport access vlan 5

The Router uses the folling route
ip route
And has an IP address of (Putting it in the same subnet as switch A)

The interface on the Router has the following config ...

interface FastEthernet0/0
ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip flow egress
ip nat inside
ip virtual-reassembly
no ip route-cache cef
ip route-cache flow
no ip mroute-cache
duplex auto
speed auto
no mop enabled
service-policy input LAN-EDGE

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up vote 0 down vote accepted

In this case it was something stupid ... I did not have a default gateway set on Switch B (Which has an IP address of as soon as I set the ip default-gateway everything worked great.

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